Alert archive / Missouri / Mesoscale Discussions in 2011
Mesoscale Discussion 2015
The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2011, 1:38 AM CDT for 4 states. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2011, 1:38 AM CDT (06:38 UTC)
- Expired
- Aug 19, 2011, 2:45 AM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 66 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Stone County, AR, Washington County, AR, Allen County, KS, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Barry County, MO, Barton County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Newton County, MO, Ozark County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saline County, MO, Shannon County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Ottawa County, OK
The radar
The Springfield radar (KSGF), 37 km from the middle of the area, began a volume at 06:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.6 hours before the alert went out and 67 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3816 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1273 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 11.7
The text
As transmitted, in the capitals the NWS used until 2016.
710
ACUS11 KWNS 190638
SWOMCD
SPC MCD 190638
MOZ000-ARZ000-OKZ000-KSZ000-190745-
MESOSCALE DISCUSSION 2015
NWS STORM PREDICTION CENTER NORMAN OK
0138 AM CDT FRI AUG 19 2011
AREAS AFFECTED...ERN KS / CNTRL AND SRN MO
CONCERNING...SEVERE THUNDERSTORM WATCH 788...789...790...
VALID 190638Z - 190745Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
788...789...790...CONTINUES.
THE SEVERE WEATHER THREAT CONTINUES ACROSS VALID PORTIONS OF WW
AREAS WITH THE GREATEST POTENTIAL FOR MAINLY DAMAGING WINDS
SPREADING ESEWD TOWARD JEF AND COU THROUGH 0730Z.
MATURE MCS OVER MO HAS ASSUMED MORE OF AN ELY MOTION WITHIN THE PAST
HOUR...LIKELY DUE TO THE EVOLUTION OF A MESOSCALE VORTEX AND
ASSOCIATED BOWING CONFIGURATION LOCATED OVER PETTIS AND BENTON
COUNTIES MO AS OF 0620Z. LOCAL RADAR BASE VELOCITY PRODUCTS
INDICATE A CORRIDOR OF ENHANCED WIND SPEEDS ON IMMEDIATE EQUATORWARD
SIDE OF VORTEX. AND EXTRAPOLATED STORM MOTION SUGGESTS THAT THIS
HIGH MOMENTUM FLOW AND RESULTANT DAMAGING WIND THREAT WILL MOVE INTO
THE JEF AND COU AREAS WITHIN THE HOUR.
ELSEWHERE...LEADING EDGE OF GUST FRONT HAS PROGRESSED WELL AHEAD OF
PARENT UPDRAFTS...POTENTIALLY SIGNALING THE ONSET OF DECAY STAGE OF
MCS AT LEAST ACROSS E-CNTRL/SERN KS INTO W-CNTRL MO. THOUGH THE
POTENTIAL FOR DAMAGING WINDS MAY CONTINUE TO DECREASE...ISOLATED
OCCURRENCES OF HAIL WILL BE POSSIBLE WITH ANY STORMS THAT FORM
WITHIN ZONE OF ENHANCED ASCENT ATOP SYSTEM COLD POOL.
..MEAD.. 08/19/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LSX...LZK...SGF...EAX...TSA...ICT...
LAT...LON 35729508 36309520 37009539 37149581 37879585 38119437
38759361 39259340 39369295 38649245 38229143 37619066
36869150 35869207 35729508SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 11:46 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Madison, Marion and 2 more | 59 min |
| Aug 19, 12:02 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Fulton, Izard and 6 more | 5 hr |
| Aug 19, 4:08 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Fulton, Madison and 3 more | 67 min |
| Aug 18, 8:09 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 18 more | 7 hr |
| Aug 18, 9:52 PM CDT | Mesoscale Discussion | SPC | Brown, Doniphan | 53 min |
| Aug 19, 3:42 PM CDT | Mesoscale Discussion | SPC | Barton, Clark, Comanche, Edwards, Ellis, Finney and 26 more | 63 min |
| Aug 18, 8:29 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, DeKalb, Gentry, Holt, Nodaway and 1 more | 61 min |
| Aug 19, 1:08 AM CDT | Severe Thunderstorm Watch | SPC | Cole, Crawford, Franklin, Gasconade, Iron, Madison and 5 more | 4 hr |
Nearby
Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Arkansas, 2011Mesoscale Discussions in Kansas, 2011Every mesoscale discussion in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.